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Reported-by: syzbot Signed-off-by: Zqiang --- drivers/usb/class/cdc-wdm.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 508b1c3f8b73..50fa951d84a1 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -221,7 +221,8 @@ static void wdm_in_callback(struct urb *urb) * We should respond to further attempts from the device to send * data, so that we can get unstuck. */ - schedule_work(&desc->service_outs_intr); + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) + schedule_work(&desc->service_outs_intr); } else { set_bit(WDM_READ, &desc->flags); wake_up(&desc->wait); @@ -306,10 +307,12 @@ static void wdm_int_callback(struct urb *urb) return; if (rv == -ENOMEM) { sw: - rv = schedule_work(&desc->rxwork); - if (rv) - dev_err(&desc->intf->dev, - "Cannot schedule work\n"); + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) { + rv = schedule_work(&desc->rxwork); + if (rv) + dev_err(&desc->intf->dev, + "Cannot schedule work\n"); + } } } exit: -- 2.17.1